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122320901 = 521234781
BaseRepresentation
bin1110100101001…
…11100000000101
322112011112201202
413102213200011
5222303232101
620045432245
73013465463
oct722474005
9275145652
10122320901
116305755a
1234b6b685
131c45a441
1412361833
15ab1336b
hex74a7805

122320901 has 4 divisors (see below), whose sum is σ = 122556204. Its totient is φ = 122085600.

The previous prime is 122320897. The next prime is 122320907. The reversal of 122320901 is 109023221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26770276 + 95550625 = 5174^2 + 9775^2 .

It is a cyclic number.

It is not a de Polignac number, because 122320901 - 22 = 122320897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122320907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116870 + ... + 117911.

It is an arithmetic number, because the mean of its divisors is an integer number (30639051).

Almost surely, 2122320901 is an apocalyptic number.

It is an amenable number.

122320901 is a deficient number, since it is larger than the sum of its proper divisors (235303).

122320901 is an equidigital number, since it uses as much as digits as its factorization.

122320901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235302.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 122320901 is about 11059.8779830521. The cubic root of 122320901 is about 496.4020394623.

The spelling of 122320901 in words is "one hundred twenty-two million, three hundred twenty thousand, nine hundred one".

Divisors: 1 521 234781 122320901